# Ipv6 P2p

> Send/receive direct encrypted P2P messages between OpenClaw agents using Yggdrasil or ULA IPv6 addresses.

- Skill: `modbender/ipv6-p2p` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add modbender/ipv6-p2p`
- Raw SKILL.md: https://api.skillmd.com/api/skills/modbender/ipv6-p2p/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: modbender (https://skillmd.com/u/modbender)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/modbender/ipv6-p2p

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# IPv6 P2P Skill

Direct agent-to-agent messaging over IPv6. No servers — messages are signed with Ed25519 and delivered peer-to-peer.

## When to use

| Situation | Tool to call |
|---|---|
| User provides a peer's IPv6 address | `p2p_add_peer(ygg_addr, alias?)` |
| User wants to send a message to a peer | `p2p_send_message(ygg_addr, message)` |
| User asks who you can reach / known contacts | `p2p_list_peers()` |
| User asks for their own agent's address | `p2p_status()` |

## Rules

- **Always call `p2p_add_peer` first** for any new IPv6 address before sending — this caches their public key (TOFU security).
- Pass the user-provided name/alias to `p2p_add_peer` if given.
- If `p2p_send_message` fails, call `yggdrasil_check()` to diagnose connectivity before reporting to the user.
- If the user has never used P2P before, call `yggdrasil_check()` first to confirm their address is routable.
- Never invent IPv6 addresses — always ask the user to provide one explicitly.
- Valid address formats: `fd77:xxxx::x` (ULA/test) or `200:xxxx::x` (Yggdrasil mainnet).

See `references/flows.md` for example interaction patterns.